January Weather in Cape Girardeau, United States

Last updated: June 24, 2025

In January, the average temperature in Cape Girardeau, United States hovers around 2°C (37°F). Expect a range that swings from a chilly -17°C (1°F) at its lowest to a pleasant 21°C (70°F) at its peak. Prepare for some wet days, as the region receives an average precipitation of 107 mm (4.2 in) over 8 days. With an average humidity of 86%, be ready for a brisk but invigorating atmosphere!

January Temperature in Cape Girardeau

In January in Cape Girardeau, the average temperature is 2°C (37°F), with maximums reaching 21°C (70°F) and minimums dropping as low as -17°C (1°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack layers for both warm and cold conditions.

January Weather in Cape Girardeau: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Cape Girardeau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cape Girardeau, January typically has an average temperature of 2°C (37°F), with highs reaching up to 21°C (70°F) and lows dropping to around -17°C (1°F).

Data source: Temperature data for Cape Girardeau generated using information from the Copernicus Climate Change Service.

January Precipitation in Cape Girardeau

In Cape Girardeau in January, the total precipitation amount is 107 mm (4.2 in), occurring over a span of 8 days.

January Precipitation Trends in Cape Girardeau

The chart displays monthly precipitation patterns in Cape Girardeau, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Cape Girardeau, January typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Cape Girardeau

In Cape Girardeau in January, humidity is 86%. With an average temperature of 2°C (37°F), this humidity feels like a chilly dampness that clings to your clothes and makes outdoor activities quite uncomfortable for traveling.

January Average Humidity in Cape Girardeau

This chart illustrates the average monthly humidity levels in Cape Girardeau, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Cape Girardeau is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Cape Girardeau

In Cape Girardeau in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Cape Girardeau, you can check the information here.

Maximum UV Index Levels in Cape Girardeau for January

The chart shows the monthly maximum UV Index (UVI) for Cape Girardeau in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Cape Girardeau typically reaches 3, which falls under the moderate exposure category.

Data source: Cape Girardeau January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Cape Girardeau Compares to Other Months

Weather in Cape Girardeau varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Cape Girardeau, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Cape Girardeau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	107 mm (4.2 inches)	86%	moderate
February Weather	4°C (40°F)	127 mm (5.0 inches)	84%	high
March Weather	10°C (50°F)	164 mm (6.5 inches)	84%	high
April Weather	14°C (57°F)	135 mm (5.3 inches)	80%	very high
May Weather	20°C (69°F)	158 mm (6.2 inches)	82%	extreme
June Weather	25°C (77°F)	102 mm (4.0 inches)	83%	extreme
July Weather	27°C (81°F)	96 mm (3.8 inches)	79%	very high
August Weather	25°C (78°F)	93 mm (3.6 inches)	76%	very high
September Weather	23°C (74°F)	72 mm (2.9 inches)	75%	very high
October Weather	16°C (61°F)	129 mm (5.1 inches)	74%	high
November Weather	8°C (46°F)	95 mm (3.7 inches)	85%	moderate
December Weather	6°C (42°F)	91 mm (3.6 inches)	88%	moderate